++++ 1. Agriculture ° Common organization of the markets ° Oils and fats ° Special measures for soya beans ° Production aid ° Measures of control ° Cultivation contracts ° Loss of entitlement to aid if a producer fails to comply with his obligation to notify changes in the areas sown ° Principle of proportionality ° Breach ° No breach ° Whether the Commission exceeded the limits of its implementing powers ° Limits not exceeded (Council Regulation No 1491/85, Art. 2(8); Commission Regulation No 2537/89, Arts 6(3), first subpara., and 29a(1) and (4), and Commission Regulation No 150/90) 2. Agriculture ° Common organization of the markets ° Oils and fats ° Special measures for soya beans ° Production aid ° Measures of control ° Cultivation contracts ° Obligation on producers to notify any change in the areas notified ° Scope (Commission Regulation No 2537/89, Art 6(3))